Contract OI history
Back to RIOTOct 30, 2026 EXPIRATION
RIOT $19.50 Call
RIOT261030C00019500
Latest saved OI249Oct 23, 2026
Last change+124vs previous saved observation
Saved market days7Oct 09, 2026 onwards
All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.
| Market date | Open interest | Change vs prior saved day |
|---|---|---|
| Oct 23, 2026Viewing | 249 | +124 |
| Oct 21, 2026 | 125 | +5 |
| Oct 16, 2026 | 120 | +1 |
| Oct 15, 2026 | 119 | +9 |
| Oct 14, 2026 | 110 | 0 |
| Oct 13, 2026 | 110 | +110 |
| Oct 09, 2026 | 0 | No prior observation |